Season 19- 1980-82

Bidmead was replaced by Antony Root as script editor- only for the serials "Four to Doomsday" and "The Visitation"- but then succeeded by Eric Saward. The traditional format of the show airing on Saturday altered; it aired on Mondays and Tuesdays- ignoring regional variations to the schedule.

List of Stories-

1. Castrovalva-

This consists of four parts-

Plot-

The newly regenerated Doctor escapes with his companions back to the TARDIS. Suffering from post-regeneration trauma, he only narrowly manages to save the ship from destruction as it plunges back to Event One, the hydrogen in-rush that preceded the creation of the universe.

He then seeks sanctuary in the peaceful domain of Castrovalva, only to discover that it is an illusory, dimensionally paradoxical trap set for him by the Master with the unwilling aid of a kidnapped Adric. The Doctor eventually wins the day by enlisting the help of the Castrovalvan people who, although also part of the Master's creation, are nevertheless able to exercise free will.

Episode Endings-

The TARDIS is heading back in time toward the hydrogen inrush that created the universe. The air is getting hotter and hotter and the ship starts to buck and shudder. The Master appears on the scanner screen and bids Tegan and Nyssa farewell forever.

Nyssa and Tegan are carrying the Doctor toward the city Castrovalva in the zero cabinet - a box made out of the doors of the TARDIS's now jettisoned zero room (a healing environment). They see Castrovalva perched on a rocky mountain ahead and hide the cabinet while they go to try to find a way in. When they return, they find blood on the ground, and the Doctor missing.

The Doctor, Tegan and Nyssa decide to leave Castrovalva. They traverse some walkways but arrive back in the main square from which they left. The Doctor is affected by the spatial disturbance and they go back to his room, intending to return him to the zero cabinet. When they get there, they discover that the cabinet has gone. The Doctor, seeing an impossibly fragmented view of Castrovalva through the window, realises that they are caught in a space/time trap.

The Doctor and his friends make their way back to the TARDIS. Tegan is disappointed that she was not, after all, responsible for piloting the TARDIS to Castrovalva - it was all down to the Master. The Doctor, contemplating his regeneration, comments that, whoever he feels like, it is absolutely splendid.